1306927 九、發明說明： 【發明所屬之技術領域】 本發明關於一種單元擺動型動力單元，其中—内有一無 段變速機構的變速箱與一引擎本體被結合為—體，本=明 亦關於一種具有該動力單元的跨坐型車輛。 " 【先前技術】 舉例來說’達可達型摩托車通常在其上安裝有一單元 動型動力單元，其中一引擎本體盘一 于个遐八円有無段變速機構 之變速箱被結合為一體。 在-些案例中’此類動力單元包括一纏繞直徑控制機 構’其中利用-電動馬達以引擎速率、車速等為基準可變 地控制-初級槽輪之—皮帶纏繞直徑，以便獲得一對應於 -引擎之-運作狀態的最佳變速齒輪比（舉例來說見_ 文獻1)。 [專利文獻1]專利說明書第3043061號。 【發明内容】 順帶-提’上述傳統動力單元涉及—引擎本體之錯直尺 寸會相依於一改變初級槽輪之纏繞直徑的主動構件及一駆 動該主動構件的電動馬達之一排列和構造而變大的問題。 又’此類動力單％需要透過損失馬力的減少來改善燃料 消耗。 本發明已就上述傳統情況做考量且其目標是提出一種動 力單元，其中一引擎本體可被製作為鉛直尺寸小型化且馬 力損失可被減少，且提出一種具有該動力單元的跨坐型車 112631.doc 1306927 本發明提出一種單元擺動型動力單元，其中一内有一無 &變速機構的變速箱和—具有—氣紅體的引擎本體及一曲 柄軸被結合成—體以被支律在—車體框架上使其能夠擺 動u又變速機構具備一圍繞一主動側槽輪和一被動側 輪的一角皮帶’在該氣缸體内―形成於包含從動側轴和 主動側轴的-假想平面與—氣缸軸線之間的角度等於Μ 度/或更小，該動力單元包括一改變該主動側槽輪之一纏繞 直控的主動構件及—用來驅動該主動構件的電動馬達，且 其中該氣缸體被形成為致使一包含該氣缸轴線並平行於該 曲柄軸線的假想平面通過一從該曲柄軸線往下移位的位 置’且該驅動用電動馬達之至少一部分及該主動構件被設 置在一包含該氣缸體一曲柄軸箱侧端並垂直於該氣虹轴線 之假想平面的一側上，朝向該氣紅體且在該氣缸體之一下 表面的上方。 以依據本發明之動力單元來說，由於氣缸體被形成為致 使一包含氣缸轴線並平行於曲柄轴線的假想平面通過一從 曲柄軸線往下移位的位置，故氣缸體㈣位在—對應於此 移位之量的下部位置。因此，有可能使氣缸體上方之一部 件安裝空間加大並使引擎本體之一鉛直尺寸小型化。 又’氣虹軸線被設置成在曲柄轴線下方錯開，藉此有可 能減小因-活塞之往復運動而作用於氣紅體上的承重效果 咖响）以對應地達成馬力損失的減小，從而促成燃料消 耗之改善。 112631.doc 1306927 再者’用來改變主動側槽輪之-纏繞直徑的主動構件之 至少-部分及用來㈣該主動構件之電動馬達被設置在一 包含該氣缸體-曲柄軸箱側端並垂直於該氣H線之假想 平面的一側上，朝向該氣缸體且在該氣缸體之一下表面的 上方’致使有可能利用因氣缸軸線在曲柄軸線下方錯開而 產生於氣缸體上方之—閒置空間來設置該主動構件及該驅 動用電動馬達，從而能夠使整個動力單元之—錯直尺寸小 型化。 【實施方式】 以下參照隨附圖式說明本發明之一實施例。 圖1至8是例示一依據本發明一實施例之動力單元及一具 有該動力單元之跨坐型車輛的圖。該實施例將是針對一安 裝在一達可達型摩托車之動力單元的情況做說明。此外， 實施例中提及之前和後及左和右意指坐在一座位上時之狀 態的前和後及左和右。又，實施例中提及之一鉛直方向意 指一垂直於一道路表面的方向。 在圖式中，參考數字801標示一具有下列概要構造的達 可達型摩托車。一前又805被樞接地安裝在一隱藏式骨架 型車體框架之一頭管（圖中未示）上，前叉8〇5將一前輪 设置在其一下端且將一駕駛把手8〇7設置在其一上端。 又，一兩人座跨坐型座位808被安裝在車體框架中央，一 單元擺動型動力單元8 10被安裝在車體框架之座位8〇8下方 使其能鉛直地擺動，且一後輪811被設置在動力單元81〇之 一後端上。 112631.doc 1306927 前叉805之一周圍被一前蓋8〇9a覆蓋，且座位8〇8之一下 部部分之一周圍被一侧蓋8〇9b覆蓋。左和右踏腳板8〇%、 809c被設置在前蓋8〇9a與側蓋8〇9b之間。 動力單元810被建構為將一内有一無段變速機構Η?之變 速箱81 8與一具有一氣缸體之引擎本體82〇結合成一體，在 該變速箱中一由橡膠或樹脂製成的三角皮帶816纏繞於— 主動側槽輪814和一從動側槽輪815，一形成於一假想平面 Α·(其包含一連接於從動側槽輪815之一從動軸815&與主動 側槽輪m之-主動軸814a間的直線A)與一氣缸軸線B間之 角0等於或小於45度、且在本實施例中約為丨〇度。 引擎本體820是一水冷式四行程單氣缸引擎，其被建構 為致使一内部收納一活塞826的氣缸體823及一内部設置著 一點火塞828、進氣和排氣閥、和用來強迫打開及關閉相 應閥之一凸輪軸（圖中未示）的氣缸頭824被結合至一内有— 曲柄軸821之曲柄軸箱822的一前匹配表面且一氣缸頭蓋 825被安裝至氣红頭824。 對左和右樞軸（支撐部分）822m、822m被向前突出地形 成於曲柄軸箱822上。左和右柩軸822m經由一連桿構件 8 13a被支撐在上述車體框架之一引擎懸承813上使其能鉛 直地擺動。 13 左和右樞軸822m被形成在下文將說明一曲柄軸箱822之 一儲油器部分822c之一前壁部分上以大致平行於氣缸軸線 B延伸。又，左和右樞軸822m被設置在氣缸體823之一下 表面下方且在依一沿著曲柄軸之方向觀看時在曲柄軸821 112631.doc 1306927 的前下方。 與一進氣琿連通之進氣管827被連接到氣缸頭824之一 上壁部分824a，進氣管827是彎的且從上壁部分824a往一 車輛後部延伸。一燃料噴射閥82乃被安裝至進給管827之 一下游端且一節流閥827b被設置在其一上游側上。一空氣 濾清器（圖中未示）被連接至進氣管827之一上游端。 曲柄轴82 1被設置為以其—曲柄軸線p依一車輛寬度方向 水平地指向，且活塞826經由一連接桿829被連接至曲柄軸 821。 曲柄轴821之左和右軸頸部分821b、821(;經由軸承83〇、 830被支撐在曲柄軸箱822之左和右側壁822a、822b上。一 密封構件831被安裝在左軸頸部分82lb與左側壁822a之 間’藉此使裝滿一潤滑油的曲柄軸箱822與内部導入一流 動氣流的變速箱8 1 8相互隔開。 一從右側壁822b往外突出之右主動轴821d被形成為與曲 柄軸821之右軸頸部分821 c呈一體。 一發電機832被安裝在右主動軸82Id之一外端，該發電 機832被一安裝在右側壁822b上的蓋833覆蓋。發電機832 包括一推拔配合於曲柄軸821上的轉子832a及一以對向於 轉子832a之方式固定於蓋833的定子832b。 上述從左側壁822a突入變速箱818内之左主動軸814a被 形成為與曲柄軸821之左軸頸部分821b呈一體。主動側槽 輪814被安裝在主動軸814a上。 一用於抑制因一初級慣性力而造成之振動的初級平衡器 112631.doc 1306927 835被設置在曲柄軸箱822内要與曲柄軸821平行。一平衡 器重錘835a被形成在初級平衡器835上且延伸為要被定位 在曲柄軸82 1之左和右曲柄臂82丨a之間。 平衡器835被支撐在左和右側壁822a、822b上以轴承 , 836、836介於其間，且一平衡器齒輪835b被安裝在平衡器 835之一右端上以一阻尼構件835c介於其間。 一與平衡器齒輪835b嚙合之主動齒輪83 7被安裝在曲柄 • 轴8 21之右轴頸部分8 21 c内側。 又，一定時鏈主動齒輪821e被一體形成在右軸頸部分 821c外側。主動齒輪82ie經由一定時鏈838被連接至凸輪 轴（圖中未示）。 一用於冷卻水之泵軸83 9a被同軸地連接至平衡器835。 泵軸839a旋轉地驅動一被設置在蓋833 一外壁上的冷卻水 泵839。一經冷卻水泵839加壓的冷卻水被供應到引擎本體 820之相應冷卻水套（圖中未示）。 • 一儲油器部分822c被形成在曲柄軸箱822之一底部上。 儲油器部分822c膨大且被形成為從變速箱8丨8之一下緣往 下突出且隨著其往前延伸而往前往下傾斜。又，複數個冷 卻片822d被形成在儲油器部分822c之一底部外表面上。 一油泵840被設置在儲油器部分822〇上，該油泵向相應 被潤滑部分譬如曲柄軸821、凸輪軸之一軸承部分、及滑 動。卩分4供應一潤滑油。油系840包括一包含被設置在曲 柄軸箱822右側壁82U外侧之一抽吸埠841a和一排放淳 84lb的殼體841，一以殼體841和右側壁822b當作軸頸的泵 ^2631^00 -10· 1306927 轴842，及一固定於泵軸842 —外端的泵齒輪843。 一中間軸846在右側壁822b上的泵軸842與曲柄轴821之 間被加上軸頸。中間軸846將一與泵齒輪843嚙合的小齒輪 846a固定於其一外端，且將一與主動齒輪837嚙合的大齒 輪846b固定於其一内端。主動齒輪837當作平衡器835及油 泵840所共用的主動構件且被設置在曲柄軸箱822内。 一連通於抽吸埠841a之抽吸通道822e被形成在右側壁 822b上，該抽吸通道822e被打開以接近儲油器部分822c之 底部表面。此外，參考數字844標示一排洩口塞。 又，一連通於排放埠841b的排放通道822f被形成在右側 壁822b上，排放通道822f連通於一濾油器845。一經油泵 840加壓且經濾油器845過濾的潤滑油從一供應通道822g分 流到一曲柄軸路徑822h和一凸輪軸路徑822i藉以被供應到 相應被潤滑部分，然後自然滴落以回到儲油器部分822c。 濾油器845被從側向外側可拆地安裝在一凹部822j内， 該凹部被提供在左侧壁822a面向儲油器部分822c的一部 分。 濾油器845和油泵840被左右分散設置為當從平面圖觀看 時以氣缸軸線B位於其間，且在依沿著曲柄軸之方向觀看 時係設置在大致同一軸線上。 一起動齒輪848被可旋轉地安裝在曲柄軸821右主動轴 821d上之發電機832與定時主動齒輪821e之間。發電機832 之轉子832a被固定至起動齒輪848之一轂848a且有一單向 離合器848b介於其間。 112631.doc -11 - 1306927 一起動馬達850(起動用電動馬達）之一主動齒輪85〇a經由 一惰輪軸849被連接至起動齒輪848。惰輪軸849被支撐為 橋接右側壁822b與蓋833，且包括一與主動齒輪850a嚙合 的大惰輪849a及一與起動齒輪848嚙合的小惰輪849b。 起動馬達850的旋轉經由惰輪軸849被傳遞給起動齒輪 848且從起動齒輪848經由轉子832a被傳遞給曲柄軸821。 起動馬達850被設置在曲柄軸箱822之一背表面之一下部 部分上’以其一馬達軸線平行於曲柄軸821指向。更明確 地說’起動馬達850被設置在一於曲柄軸箱822儲油器部分 822c之一後壁部分上凹下提供的容納凹部822n内，且被一 馬達蓋850b覆蓋。 變速箱818包括一被一體形成的箱本體818a，該箱本體 被施作成連續於曲柄軸箱822之左側壁822a且延伸到後輪 8 11，且一箱蓋819被可拆地安裝在箱本體8丨8a之一左匹配 表面上。一冷卻氣流導入蓋（圖中未示）被安裝至箱蓋819之 一外側以將一流動氣流導入變速箱8丨8内。 主動側槽輪814包括一被栓槽配合至主動軸814a上隨其 方疋轉的軸環構件853，一被安裝在軸環構件853上要能軸向 移動及隨軸環構件853旋轉的可動槽輪854，及一被安裝在 主動軸8 14 a上緊抵軸環構件8 5 3之一左端表面且被一定位 螺母855固定為不可軸向移動的靜止槽輪850。 k動側槽輪8 1 5包括一被可旋轉地且不可軸向移動地安 裝在從動軸815a(其以軸頸橋接箱本體““與箱蓋819)上的 靜止槽輪857’ 一被安裝在靜止槽輪857上要能軸向移動及 H2631.doc -12- 1306927 隨靜止槽輪857旋轉的可動槽輪858，及一被安插在靜止槽 輪857與從動軸815a間的離心型離合器859。離心型離合器 8 5 9在從動侧槽輪815被提高轉速時將從動側槽輪8 15之旋 轉傳遞給從動軸8 15a。從動軸815a之旋轉經由一主軸860 、 及主動軸861被傳遞給安裝於主動軸861上的後輪811，該 主軸和主動軸被設置成平行於從動軸815 a。 « 無段變速機構817包括一以引擎速率及車速等為基準改 φ 變主動側槽輪814之一皮帶纏繞直徑的纏繞直徑變化機構 864 ’違缠繞直控變化機構被設置在一纏繞直徑控制室 864a内’該控制室在變速箱818之一前端處膨大且傾斜向 上形成。 纏繞直徑變化機構864被建構為將一 ECVT馬達（驅動用 電動馬達）865之旋轉傳遞給一當作一齒輪系和一主動構件 的往復齒輪866以將該旋轉變換成主動側槽輪814之可動槽 輪854的軸向移動’藉此自動地且可變地控制主動側槽輪 φ 814在一下部位置與一頂部位置間之一皮帶纏繞直徑。 ECVT馬達865之旋轉被一控制器（圖中未示）以引擎速率、 車速專為基準予以控制。 纏繞直徑變化機構864包括ECVT馬達865、一 達865之旋轉傳遞給往復齒輪866的旋轉傳動齒輪部分 867、及一將往復齒輪866之旋轉變換成可動槽輪854之軸 向移動的軸向移動變換部分868。 ECVT馬達865被設置在曲柄轴箱822之一上矣&、 丄衣面之一前 部部分上且位於曲柄軸821的上方’使其一馬達轴線平行 112631.doc -13· 1306927 於曲柄軸821。又，ECVT馬達865從車輛寬度方向内部被 安裝並固定於界定纏繞直徑控制室864a之一左壁822a之一 延伸部822a’。ECVT馬達865之一旋轉齒輪865a延伸穿過延 伸部822a'以突入纏繞直徑控制室864a内。 如從車輛側面所見，ECVT馬達865被延伸部822a'覆蓋且 被設置在曲柄軸箱822上表面與進氣管827之間。 旋轉傳動齒輪部分867包括往復齒輪866、一與往復齒輪 866嚙合的馬達側齒輪869、及一減緩ecvt馬達865之轉速 以將旋轉傳遞給馬達側齒輪869的減速齒輪87〇，且ECvT 馬達865之旋轉齒輪865a與減速齒輪870嚙合。此處以參考 數字871標示一旋轉頻率感測器，且ecvT馬達865之一旋 轉狀態及可動槽輪854之一轴向移動位置均由旋轉頻率感 測器871偵測。 馬達側齒輪869和減速齒輪870分別經由軸承879、88〇被 支樓在左側壁822a之延伸部822a’及箱蓋819之一延伸部 819a。 軸向移動變換部分868包括一安裝在可動槽輪854上的滑 動筒體872, 一藉由滑動筒體872穿過一軸承873被可旋轉 地支撐且往復齒輪866被固定於此的可動側送螺旋構件 874，及一與可動侧送螺旋構件874嚙合且被問在左侧壁 822a上的靜止側送螺旋構件875。 靜止側送螺旋構件875被—以螺栓固定於左側壁8仏的 靜止側支㈣件876支撑…定心軸承m被安插在靜止側 支撐構件876與-固定於主動軸81耗的軸承支撐構件μ之 112631.doc -14 - 1306927 間。 當伴隨一加速器打開操作使一引擎速率提高時，ecvt 馬達865之旋轉被控制為呈現一依據該引擎速率等的預設 皮帶纏繞直徑。ECVT馬達865之旋轉齒輪856a的旋轉被從 減速齒輪870及馬達側齒輪869傳遞給往復齒輪866。當往 復齒輪866旋轉時，可動侧送螺旋構件874連同往復齒輪 866轴向地移動一段對應於ECVT馬達865之一旋轉量的距 離。伴隨於此，可動槽輪854往一頂側移動一預定量，使 得主動側槽輪814得到設定的皮帶纏繞直徑。 動力單元810被建構為致使後輪811在車輛寬度方向中之 一中心線被製作成與一氣紅轴線B重合，且經安裝以便與 一車體框架801之一中心線重合。 動力單元810之氣缸體823、氣缸頭824及頭蓋825被設置 為在沿曲柄軸之方向觀看時是錯開的，使得一包含氣缸軸 線B且平行於曲柄軸線p之假想平面B，通過一從曲柄軸線p 往下移位t(特定言之為約5 mm至7 mm)的位置。 往復齒輪866用於改變主動侧槽輪814—纏繞直徑的部分 及ECVT馬達865用於驅動往復齒輪866的主要部分被設置 在一包含氣缸體823曲柄軸箱側端823c並垂直於氣缸軸線b 的假想平面E之一側上，在以鉛直向觀看時係朝向氣缸體 823且位於氣缸體823之下表面的上方。換句話說，纏繞直 徑變化機構864和ECVT馬達865被設置在氣缸軸線b的上 方。 又，ECVT馬達865被設置在氣缸體823之一上表面823a H2631.doc -15- 1306927 的上方。更明確地說，ECVT馬達865被設置在一凹部a# 中’該凹部係形成於曲柄軸箱822之一氣缸體匹配表面部 刀上且被曲柄軸箱822之延伸部822a'覆蓋。 往復齒輪866被設置成位在氣缸體823的右方。 初級平衡器8 3 5被設置在一包含曲柄軸線P並垂直於氣缸 軸線B的假想平面c之一對向於氣缸體823之側上，且在依 沿著曲柄軸82 1之方向觀看時係在曲柄軸的上方。 起動馬達850之主動齒輪850a之一旋轉軸線被設置在包 含曲柄軸線P並垂直於氣缸軸線B的假想平面C之一對向於 氣缸體823之側上，且在依沿著曲柄軸821之方向觀看時係 在曲柄軸的下方。 又’ ECVT馬達865和起動馬達850分別被設置在一包含 曲柄軸線P及樞軸822m —擺動軸線p 1之假想平面D的上方 和下方以相對於假想平面D呈對稱。 動力單元810之樞軸（支承）822m被設置在包含氣缸體823 曲柄軸箱侧端823c並垂直於氣缸軸線b之假想平面£的一側 上朝向氣缸體’且在依沿著曲柄軸之方向觀看時係在氣缸 體823下表面823b的下方。此外，樞軸822m被設置在一包 含氣缸軸線B並平行於曲柄軸線P之假想平面Βι的下方。 依據該實施例，由於氣缸體823、氣缸頭824及頭蓋825 被設置成錯開’致使包含氣缸軸線B並平行於曲柄軸線p之 假想平面B'通過一從曲柄軸線P往下移位t的位置，故氣缸 體823被定位在曲柄軸線P下方距離t處。如此有可能使氣 缸體823上表面823a上方之一部件安裝空間加大並使引擎 112631.doc -16- 1306927 本體820之一鉛直尺寸小型化。 又，氣缸軸線B被設置成在曲柄軸線p下方錯開，夢此有 可能減小因活塞826之往復運動而作用於氣缸内徑上的承 重效果以對應地達成馬力損失的減小’從而促成燃料消耗 之改善。 依據該實施例’由於往復齒輪866之一部分和ECVT馬達 8 65之一主要部分被設置在一包含氣缸體823曲柄軸箱侧端 823c並垂直於氣缸軸線B的假想平面e之一側上，在以船直 向觀看時係朝向氣缸體823且位於氣缸體823之下表面的上 方，故有可能利用一因此種偏移排列而產生於氣缸體823 上方之閒置空間來設置纏繞直徑變化機構864和ECVT馬達 865，且使整個動力單元之一鉛直尺寸小型化。 依據§亥實施例’由於ECVT馬達865被設置在氣缸體823 的上表面823 a及曲柄軸箱822的氣缸體匹配表面部分上， 故有可能利用一因該偏移排列而產生於氣缸體823上方之 閒置空間來設置ECVT馬達865 ’且避免因纏繞直徑變化機 構864之安裝而使動力單元810過大。 依據該實施例’由於用來抑制因一初級慣性力所造成之 振動的初級平衡器835被設置在包含曲柄軸線p並垂直於氣 缸軸線B的假想水平面C之一對向於氣缸體之侧上且在依 沿著曲柄軸821之方向觀看時位於曲柄軸的上方，故初級 平衡器835被定位在一對向於纏繞直徑變化機構864之侧上 以假想平面C介於其間，且可使曲柄軸821之前部和後部有 良好重量平衡。 112631.doc •17· 1306927 依據該實施例’由於起動馬達85()被設置在包含曲柄轴 線P並垂直於氣缸軸線B的假想平面c之一對向於氣缸體 ⑶且在依沿著曲柄軸821之方向觀看時位於曲柄軸的下 方，故起動馬達850被定位在一對向於纏繞直徑變化機構 864之侧上以假想平面c介於其間，且可使曲柄軸a〗之上 方或下方有良好重量平衡。 』依據該實施例，由於動力單元81〇之左和右樞轴咖被1306927 IX. The invention relates to a unit swing type power unit, wherein a gearbox having a stepless shifting mechanism and an engine body are combined into a body, and A straddle type vehicle having the power unit. " [Prior Art] For example, 'Da's type motorcycles usually have a unit-type power unit mounted on them, and one of the engine body plates is combined with a gearbox with a stepless shifting mechanism. . In some cases, 'such a power unit includes a winding diameter control mechanism' in which the electric motor is variably controlled based on the engine speed, the vehicle speed, etc. - the primary winding wheel - the belt winding diameter, in order to obtain a corresponding The optimum gear ratio of the engine-operating state (see, for example, _Document 1). [Patent Document 1] Patent Specification No. 3043061. SUMMARY OF THE INVENTION The above-mentioned conventional power unit involves that the wrong size of the engine body varies depending on an arrangement of the active member that changes the winding diameter of the primary sheave and an electric motor that sways the active member. Big problem. In addition, such power orders require a reduction in lost horsepower to improve fuel consumption. The present invention has been made in view of the above conventional circumstances and its object is to propose a power unit in which an engine body can be made to be miniaturized in vertical size and horsepower loss can be reduced, and a straddle type vehicle 112631 having the power unit is proposed. .doc 1306927 The present invention proposes a unit swing type power unit in which a gearbox having a gearless mechanism and an engine body having a gas red body and a crankshaft are combined to form a body to be controlled. The body frame is configured to be capable of swinging u, and the shifting mechanism has a corner belt around an active side sheave and a passive side wheel 'in the cylinder body-formed on the imaginary plane including the driven side shaft and the active side shaft The angle between the cylinder axis and the cylinder axis is equal to / or less, the power unit includes an active member that changes a winding direct control of the active side sheave and an electric motor for driving the active member, and wherein The cylinder block is formed such that an imaginary plane including the cylinder axis and parallel to the crank axis passes through a position displaced downward from the crank axis 'and the drive At least a portion of the electric motor and the active member are disposed on a side including the crankshaft side end of the crankshaft and perpendicular to the imaginary plane of the gas axis, toward the gas red body and in the cylinder block Look at the top of the surface. In the power unit according to the present invention, since the cylinder block is formed such that an imaginary plane including the cylinder axis and parallel to the crank axis is displaced downwardly from the crank axis, the cylinder block (four) is located at - The lower position corresponding to the amount of this shift. Therefore, it is possible to increase the installation space of one of the components above the cylinder block and to miniaturize the vertical size of one of the engine bodies. Moreover, the 'air-axis is arranged to be staggered below the crank axis, thereby making it possible to reduce the weight-bearing effect on the gas-red body due to the reciprocating motion of the piston to correspondingly achieve a reduction in horsepower loss, This contributes to an improvement in fuel consumption. 112631.doc 1306927 Further, at least a portion of the active member for changing the winding diameter of the active side sheave and an electric motor for (iv) the active member are disposed at a side end including the cylinder block-crank axle box On one side of the imaginary plane perpendicular to the gas H-line, facing the cylinder block and above the lower surface of the cylinder block, it is possible to use the idleness of the cylinder axis below the crankshaft axis to create an idle position above the cylinder block The active member and the electric motor for driving are provided in a space, so that the size of the entire power unit can be reduced. [Embodiment] Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings. 1 to 8 are diagrams illustrating a power unit and a straddle type vehicle having the power unit according to an embodiment of the present invention. This embodiment will be described with respect to a power unit mounted on a reachable motorcycle. Further, the reference to the front and back and the left and right in the embodiment means the front and rear and the left and right of the state when sitting on a seat. Further, one of the vertical directions mentioned in the embodiment means a direction perpendicular to a road surface. In the drawings, reference numeral 801 designates a reachable motorcycle having the following general configuration. A front 805 is pivotally mounted on a head tube (not shown) of a hidden skeleton type body frame, and the front fork 8〇5 has a front wheel disposed at a lower end thereof and a driving handle 8〇7 is set. At its upper end. Further, a one or two seat straddle type seat 808 is installed in the center of the vehicle body frame, and a unit swing type power unit 8 10 is mounted under the seat frame 8 8 of the body frame so as to be vertically swingable, and a rear wheel The 811 is disposed on one of the rear ends of the power unit 81. 112631.doc 1306927 One of the front forks 805 is covered by a front cover 8〇9a, and one of the lower portions of one of the seats 8〇8 is covered by a side cover 8〇9b. The left and right foot plates 8〇%, 809c are disposed between the front cover 8〇9a and the side cover 8〇9b. The power unit 810 is constructed to integrate a gearbox 81 8 having a stepless shifting mechanism and an engine body 82A having a cylinder block in which a triangle made of rubber or resin is integrated. The belt 816 is wound around the active side sheave 814 and a driven side sheave 815, and is formed in an imaginary plane (· (which includes a driven shaft 815& and an active side slot connected to the driven side sheave 815 The angle 0 between the straight line A) between the wheel m and the drive shaft 814a and the axis B of a cylinder is equal to or less than 45 degrees, and is approximately the same in this embodiment. The engine body 820 is a water-cooled four-stroke single-cylinder engine constructed to cause a cylinder block 823 that internally houses a piston 826 and an internal ignition plug 828, intake and exhaust valves, and for forced opening. And a cylinder head 824 that closes a camshaft (not shown) of the corresponding valve is coupled to a front mating surface of a crankcase 822 having a crankshaft 821 therein and a cylinder head cap 825 is mounted to the gas red head 824. . The left and right pivots (support portions) 822m, 822m are projected forwardly on the crankcase 822. The left and right x-axis 822m is supported on one of the engine body frames 813 via a link member 8 13a so as to be vertically swung. 13 Left and right pivots 822m are formed to extend substantially parallel to the cylinder axis B on a front wall portion of one of the oil reservoir portions 822c of a crankcase 822. Further, the left and right pivots 822m are disposed below the lower surface of one of the cylinder blocks 823 and under the front of the crankshaft 821 112631.doc 1306927 as viewed in the direction along the crankshaft. An intake pipe 827 communicating with an intake port is connected to an upper wall portion 824a of the cylinder head 824, and the intake pipe 827 is curved and extends from the upper wall portion 824a toward the rear of a vehicle. A fuel injection valve 82 is mounted to a downstream end of the feed pipe 827 and a throttle valve 827b is disposed on an upstream side thereof. An air cleaner (not shown) is connected to one of the upstream ends of the intake pipe 827. The crank shaft 82 1 is disposed to be horizontally oriented with its crank axis p in a vehicle width direction, and the piston 826 is coupled to the crank shaft 821 via a connecting rod 829. The left and right journal portions 821b, 821 of the crankshaft 821 are supported on the left and right side walls 822a, 822b of the crankcase 822 via bearings 83A, 830. A sealing member 831 is mounted to the left journal portion 82lb. Between the left side wall 822a and the left side wall 822a, a crankcase 822 filled with a lubricating oil is separated from the gearbox 8 1 8 which is internally introduced with a flowing air flow. A right driving shaft 821d protruding outward from the right side wall 822b is formed. To be integrated with the right journal portion 821c of the crankshaft 821. A generator 832 is mounted at one of the outer ends of the right drive shaft 82Id, which is covered by a cover 833 mounted on the right side wall 822b. The 832 includes a rotor 832a that is push-fitted to the crankshaft 821 and a stator 832b that is fixed to the cover 833 in a manner opposite to the rotor 832a. The left drive shaft 814a that protrudes from the left side wall 822a into the gearbox 818 is formed as It is integral with the left journal portion 821b of the crankshaft 821. The active side sheave 814 is mounted on the drive shaft 814a. A primary balancer 112631.doc 1306927 835 for suppressing vibration due to a primary inertial force is provided. In the crank axle box 822 to be with the song The arbor 821 is parallel. A balancer weight 835a is formed on the primary balancer 835 and extends to be positioned between the left and right crank arms 82A of the crankshaft 82 1 . The balancer 835 is supported on the left and right sides The walls 822a, 822b are with bearings 836, 836 interposed therebetween, and a balancer gear 835b is mounted on one of the right ends of the balancer 835 with a damping member 835c interposed therebetween. A drive gear meshing with the balancer gear 835b 83 7 is attached to the inside of the right journal portion 8 21 c of the crank shaft A 21. Further, the chain drive gear 821e is integrally formed outside the right journal portion 821c. The drive gear 82ie is connected to the drive shaft 82 via the timing chain 838. A camshaft (not shown). A pump shaft 83 9a for cooling water is coaxially coupled to the balancer 835. The pump shaft 839a rotationally drives a cooling water pump 839 disposed on an outer wall of the cover 833. Once cooled The cooling water pressurized by the water pump 839 is supplied to a corresponding cooling water jacket (not shown) of the engine body 820. • An oil reservoir portion 822c is formed on the bottom of one of the crankcases 822. The oil reservoir portion 822c is inflated. And formed as a change One of the lower edges of the case 8 8 projects downward and slopes downward as it extends forward. Further, a plurality of cooling fins 822d are formed on the bottom outer surface of one of the oil reservoir portions 822c. An oil pump 840 is provided At the oil reservoir portion 822, the oil pump supplies a lubricating oil to a respective lubricated portion, such as a crankshaft 821, a bearing portion of the camshaft, and a sliding portion. The oil system 840 includes an inclusion disposed on the crankshaft. One of the outer sides of the right side wall 82U of the tank 822 is sucked by a casing 841a and a casing 841 of a discharge weir 84b, a pump 2631 00 - 10 · 1306927 shaft 842 having a casing 841 and a right side wall 822b as a journal, and a A pump gear 843 is attached to the outer end of the pump shaft 842. An intermediate shaft 846 is journaled between the pump shaft 842 and the crank shaft 821 on the right side wall 822b. The intermediate shaft 846 fixes a pinion 846a that meshes with the pump gear 843 to an outer end thereof, and fixes a large gear 846b that meshes with the driving gear 837 to an inner end thereof. The drive gear 837 acts as an active member common to the balancer 835 and the oil pump 840 and is disposed within the crankcase 822. A suction passage 822e communicating with the suction weir 841a is formed on the right side wall 822b which is opened to approach the bottom surface of the oil reservoir portion 822c. Additionally, reference numeral 844 indicates a row of vent plugs. Further, a discharge passage 822f communicating with the discharge hopper 841b is formed on the right side wall 822b, and the discharge passage 822f is communicated with an oil filter 845. The lubricating oil that has been pressurized by the oil pump 840 and filtered by the oil filter 845 is branched from a supply passage 822g to a crankshaft path 822h and a camshaft path 822i to be supplied to the corresponding lubricated portion, and then naturally dripped to return to the reservoir. Oiler portion 822c. The oil filter 845 is detachably mounted from the laterally outward side in a recess 822j provided in a portion of the left side wall 822a facing the oil reservoir portion 822c. The oil filter 845 and the oil pump 840 are disposed to be left and right dispersedly disposed with the cylinder axis B therebetween when viewed from a plan view, and disposed on substantially the same axis when viewed in the direction along the crank axis. A starter gear 848 is rotatably mounted between the generator 832 on the right drive shaft 821d of the crankshaft 821 and the timing drive gear 821e. The rotor 832a of the generator 832 is secured to one of the hubs 848a of the starter gear 848 with a one-way clutch 848b interposed therebetween. 112631.doc -11 - 1306927 A drive gear 85 〇a, a starter motor 850 (starting electric motor), is coupled to the starter gear 848 via an idler shaft 849. The idler shaft 849 is supported to bridge the right side wall 822b and the cover 833, and includes a large idler gear 849a that meshes with the drive gear 850a and a small idler gear 849b that meshes with the starter gear 848. The rotation of the starter motor 850 is transmitted to the starter gear 848 via the idler shaft 849 and from the starter gear 848 to the crankshaft 821 via the rotor 832a. The starter motor 850 is disposed on a lower portion of one of the back surfaces of one of the crankcases 822 with its motor axis directed parallel to the crankshaft 821. More specifically, the starter motor 850 is disposed in a recess 822n provided in a recessed portion of the rear wall portion of one of the oil reservoir portions 822c of the crankcase 822, and is covered by a motor cover 850b. The gearbox 818 includes an integrally formed bin body 818a that is configured to extend parallel to the left side wall 822a of the crankcase 822 and to the rear wheel 81, and a bin cover 819 is removably mounted to the bin body One of the 8丨8a left matches the surface. A cooling airflow introduction cover (not shown) is attached to one of the outer sides of the cover 819 to introduce a flowing airflow into the transmission 8'8. The active side sheave 814 includes a collar member 853 that is coupled to the drive shaft 814a by a bolt groove, and is movably mounted on the collar member 853 for axial movement and rotation with the collar member 853. A sheave 854, and a stationary sheave 850 mounted on the drive shaft 8 14 a against a left end surface of the collar member 853 and fixed by a retaining nut 855 to be non-axially movable. The k-side sheave 8 1 5 includes a stationary sheave 857' that is rotatably and non-axially movably mounted on the driven shaft 815a (which is pivoted to the tank body "" and the tank cover 819) a movable sheave 858 mounted on the stationary sheave 857 to be axially movable and H2631.doc -12-1306927 to rotate with the stationary sheave 857, and a centrifugal type interposed between the stationary sheave 857 and the driven shaft 815a Clutch 859. The centrifugal clutch 8 5 9 transmits the rotation of the driven side sheave 8 15 to the driven shaft 8 15a when the driven side sheave 815 is increased in rotational speed. The rotation of the driven shaft 815a is transmitted via a main shaft 860 and the driving shaft 861 to a rear wheel 811 mounted on the driving shaft 861, which is disposed parallel to the driven shaft 815a. « The stepless shifting mechanism 817 includes a winding diameter changing mechanism 864 that changes the diameter of the belt of one of the active side sheaves 814 based on the engine speed and the vehicle speed. The illegal winding change mechanism is set in a winding diameter control. In the chamber 864a, the control chamber is inflated at the front end of one of the gearboxes 818 and formed obliquely upward. The winding diameter changing mechanism 864 is constructed to transmit the rotation of an ECVT motor (driving electric motor) 865 to a reciprocating gear 866 that acts as a gear train and an active member to convert the rotation into the movable side sheave 814. The axial movement of the sheave 854 'automatically and variably controls the belt diameter of one of the belt between the lower position and the top position of the active side sheave φ 814. The rotation of the ECVT motor 865 is controlled by a controller (not shown) based on the engine speed and the vehicle speed. The winding diameter changing mechanism 864 includes an ECVT motor 865, a rotating transmission gear portion 867 that transmits rotation of the 865 to the reciprocating gear 866, and an axial movement transformation that converts the rotation of the reciprocating gear 866 into the axial movement of the movable sheave 854. Part 868. The ECVT motor 865 is disposed on one of the crankcases 822, on the front portion of one of the garments and above the crankshaft 821, such that a motor axis is parallel to 112631.doc -13·1306927 on the crank Axis 821. Further, the ECVT motor 865 is mounted and fixed from the inside of the vehicle width direction to one of the extension portions 822a' defining the left wall 822a of one of the winding diameter control chambers 864a. One of the ECVT motors 865, the rotating gear 865a, extends through the extension 822a' to project into the winding diameter control chamber 864a. As seen from the side of the vehicle, the ECVT motor 865 is covered by the extension 822a' and disposed between the upper surface of the crankcase 822 and the intake pipe 827. The rotary transmission gear portion 867 includes a reciprocating gear 866, a motor side gear 869 that meshes with the reciprocating gear 866, and a reduction gear 87 that slows the rotation speed of the ecvt motor 865 to transmit rotation to the motor side gear 869, and the ECvT motor 865 The rotating gear 865a meshes with the reduction gear 870. A rotational frequency sensor is indicated herein by reference numeral 871, and one of the rotational state of the ecvT motor 865 and one of the axially movable positions of the movable sheave 854 is detected by the rotational frequency sensor 871. The motor side gear 869 and the reduction gear 870 are respectively supported by the extension portion 822a' of the left side wall 822a and one of the extension portions 819a of the cover 819 via the bearings 879, 88. The axial movement changing portion 868 includes a sliding cylinder 872 mounted on the movable sheave 854, a movable side which is rotatably supported by the sliding cylinder 872 through a bearing 873 and the reciprocating gear 866 is fixed thereto A spiral member 874, and a stationary side feed screw member 875 that engages with the movable side feed screw member 874 and is asked on the left side wall 822a. The stationary side feed screw member 875 is supported by a stationary side branch (four) member 876 bolted to the left side wall 8A. The centering bearing m is inserted in the stationary side support member 876 and the bearing support member affixed to the drive shaft 81. 112631.doc -14 - 1306927. When an engine speed is increased with an accelerator opening operation, the rotation of the ecvt motor 865 is controlled to assume a predetermined belt winding diameter depending on the engine speed or the like. The rotation of the rotating gear 856a of the ECVT motor 865 is transmitted from the reduction gear 870 and the motor side gear 869 to the reciprocating gear 866. When the reciprocating gear 866 rotates, the movable side feed screw member 874 moves axially along with the reciprocating gear 866 for a distance corresponding to the amount of rotation of the ECVT motor 865. Along with this, the movable sheave 854 is moved to a top side by a predetermined amount so that the active side sheave 814 obtains the set belt winding diameter. The power unit 810 is constructed such that a center line of the rear wheel 811 in the vehicle width direction is made to coincide with a gas red axis B and is mounted to coincide with a center line of a body frame 801. The cylinder block 823, the cylinder head 824 and the head cover 825 of the power unit 810 are arranged to be staggered when viewed in the direction of the crankshaft such that an imaginary plane B containing the cylinder axis B and parallel to the crank axis p passes through a crank The axis p is shifted downward by t (specifically, about 5 mm to 7 mm). The reciprocating gear 866 is used to change the portion of the driving side sheave 814 - the winding diameter and the main portion of the ECVT motor 865 for driving the reciprocating gear 866 is disposed at a crankshaft case side end 823c including the cylinder block 823 and perpendicular to the cylinder axis b On one side of the imaginary plane E, it faces the cylinder block 823 and is located above the lower surface of the cylinder block 823 when viewed in the vertical direction. In other words, the winding diameter changing mechanism 864 and the ECVT motor 865 are disposed above the cylinder axis b. Further, the ECVT motor 865 is disposed above the upper surface 823a H2631.doc -15-1306927 of one of the cylinder blocks 823. More specifically, the ECVT motor 865 is disposed in a recess a# which is formed on one of the cylinder block mating surface knives of the crankcase 822 and is covered by the extension 822a' of the crankcase 822. The reciprocating gear 866 is disposed to be positioned to the right of the cylinder block 823. The primary balancer 835 is disposed on a side of the imaginary plane c including the crank axis P and perpendicular to the cylinder axis B opposite to the cylinder block 823, and is viewed in the direction along the crankshaft 82 1 Above the crankshaft. One of the rotational axes of the driving gear 850a of the starter motor 850 is disposed on the side of the imaginary plane C including the crank axis P and perpendicular to the cylinder axis B opposite to the cylinder block 823, and in the direction along the crankshaft 821 It is attached below the crankshaft when viewed. Further, the ECVT motor 865 and the starter motor 850 are respectively disposed above and below the imaginary plane D including the crank axis P and the pivot 822m - the swing axis p 1 to be symmetrical with respect to the imaginary plane D. The pivot (support) 822m of the power unit 810 is disposed on the side including the crankcase side end 823c of the cylinder block 823 and perpendicular to the imaginary plane £ of the cylinder axis b toward the cylinder block 'and in the direction along the crankshaft When viewed, it is below the lower surface 823b of the cylinder block 823. Further, the pivot 822m is disposed below an imaginary plane 包 including the cylinder axis B and parallel to the crank axis P. According to this embodiment, since the cylinder block 823, the cylinder head 824, and the head cover 825 are disposed to be staggered 'to cause the imaginary plane B' including the cylinder axis B and parallel to the crank axis p to pass a position shifted downward from the crank axis P by t Therefore, the cylinder block 823 is positioned at a distance t below the crank axis P. Thus, it is possible to increase the mounting space of one of the upper surfaces of the upper surface 823a of the cylinder block 823 and to miniaturize the vertical size of one of the engines 112631.doc - 16 - 1306927. Further, the cylinder axis B is disposed to be displaced below the crank axis p, and it is possible to reduce the load-bearing effect acting on the inner diameter of the cylinder due to the reciprocating motion of the piston 826 to correspondingly achieve a reduction in horsepower loss, thereby contributing to fuel Improvement in consumption. According to this embodiment, since one of the portions of the reciprocating gear 866 and one of the main portions of the ECVT motor 8 65 are disposed on one side of the imaginary plane e including the crankcase side end 823c of the cylinder block 823 and perpendicular to the cylinder axis B, When the ship is viewed in a straight direction toward the cylinder block 823 and above the lower surface of the cylinder block 823, it is possible to provide the winding diameter changing mechanism 864 by using an idle space generated above the cylinder block 823 by an offset arrangement. The ECVT motor 865 and miniaturizes the vertical size of one of the entire power units. According to the embodiment of the present invention, since the ECVT motor 865 is disposed on the upper surface 823a of the cylinder block 823 and the cylinder body mating surface portion of the crankcase 822, it is possible to generate the cylinder block 823 by the offset arrangement. The upper idle space is used to set the ECVT motor 865' and the power unit 810 is prevented from being oversized by the installation of the winding diameter changing mechanism 864. According to this embodiment, the primary balancer 835 for suppressing the vibration caused by a primary inertial force is disposed on the side of the cylinder block on one of the imaginary horizontal planes C including the crank axis p and perpendicular to the cylinder axis B. And located above the crankshaft when viewed in the direction along the crankshaft 821, the primary balancer 835 is positioned on the side of the pair of winding diameter changing mechanisms 864 with the imaginary plane C interposed therebetween, and the crank can be made The front and rear of the shaft 821 have a good weight balance. 112631.doc • 17· 1306927 according to this embodiment 'Because the starter motor 85() is disposed on one of the imaginary planes c including the crank axis P and perpendicular to the cylinder axis B, the cylinder block (3) is oriented along the crank When the direction of the shaft 821 is viewed below the crankshaft, the starter motor 850 is positioned on the side of the pair of winding diameter changing mechanisms 864 with the imaginary plane c interposed therebetween and can be above or below the crankshaft a Have a good weight balance. According to this embodiment, since the left and right pivots of the power unit 81 are
设置在包含氣缸體823曲柄軸箱側端823(^並垂直於氣缸軸 線B的假想平面E之一側上朝向氣缸體823且在依沿著曲柄 軸之方向觀看時位於氣缸體823下表面823b的下方，故用 來當作動力單元8_直向擺動之支承的樞㈣化可被定 位在接近氣缸體823的位置，且可增進用來支撐動力單元 810的勁度。 又，由於柩軸822m被設置在氣缸體823之下表面的下 方，故有可能更進一步加大氣缸體823上方之一部件安裝 空間。 此外，儘管以上實施例說明中提及之引擎具有一前傾氣 缸或-水平m中-氣缸軸線B與包含連接於主動轴 814a和從動軸81“間之直線a的假想平面A,形成45度或更 J角度本發明亦可應用在氣缸軸線B形成45度或更大角 度的案例。在此例中，氣缸體823被偏移設置，使得包含 氣缸軸線B之假想平面B，通過一往—側（例如在沿著曲柄軸 之方向觀看時之曲柄軸線p一前側）移位的位置。柩軸（支 承）822m被形成在包含氣缸體823曲柄軸箱侧端μ”並垂直 112631.doc .18- 1306927 且任 ;氣叙轴線3之假想平面E的一側上朝向氣飯體 向於曲柄軸線P之側上以氣缸軸線B介於其間。 又：雖然已就一達可達型摩托車之動力單元說明實施 ' ㈣之動力單元並不侷限於達可達型摩托車，亦 =在其他摩托車。本說明書中提及之"摩托車"一辭意 θ匕 具有原動機之腳踏車（電動腳踏車）及一達可達型 的摩托車，更明確地說係指—能夠在車體傾斜 p車輛。因&，即便是就輪胎數量來說為前輪和後 ^2 纟含有二或更多車輪的三輪車、四輪車（或更多 輪子的車）亦可被歸入本發明說明書中所述的"摩托車"。此 2本發明並不侷限於摩托車，其亦可應用在能夠利用本 之效應的其他車輛中，譬如一般俗稱之跨坐型車輛、 ^括摩托車以外的四輪運輸車（ATV:全地形車輛）和雪地 摩托車。 【圖式簡單說明】 、圖1是一具備依據本發明一實施例之一動力單元的達 達型摩托車的側視圖。 圖2疋一以局部剖面示出該動力單元的平面圖。 圖3是-示出箱蓋已被移除之狀態下之該動力單元的側 視圖。 圖4是一示出該動力單元之一引擎本體的右側視圖。 圖5是一示出該動力單元之一無段變速機構的剖面圖。 圖6是—示出該動力單元之-起動馬達部分的剖面圖。 圖7是-示出該動力單元之一初級平衡器和—油系驅動 112631.docIt is disposed on the lower surface 823b of the cylinder block 823 on one side of the imaginary plane E including the crankcase side end 823 of the cylinder block 823 and perpendicular to the cylinder axis B toward the cylinder block 823 and when viewed in the direction along the crankshaft. Below, the pivoting for supporting the power unit 8_straight swing can be positioned close to the cylinder block 823, and the stiffness for supporting the power unit 810 can be enhanced. 822m is disposed below the lower surface of the cylinder block 823, so it is possible to further enlarge one of the component mounting spaces above the cylinder block 823. Further, although the engine mentioned in the above embodiment has a forward tilting cylinder or - level The mid-m cylinder axis B and the imaginary plane A including the line a connected between the drive shaft 814a and the driven shaft 81 form an angle of 45 degrees or J. The present invention can also be applied to the cylinder axis B to form 45 degrees or more. The case of the angle. In this example, the cylinder block 823 is offset such that the imaginary plane B containing the cylinder axis B passes through a side-to-side (e.g., the crank axis p is a front side when viewed in the direction of the crankshaft) Shifted position The boring shaft (support) 822m is formed on the side including the cylinder shaft 823 crankcase side end μ" and the vertical 112631.doc .18 - 1306927 and any of the imaginary planes E of the deflation axis 3 toward the gas cooker On the side of the crank axis P, the cylinder axis B is interposed therebetween. Also: although the power unit of the reachable motorbike has been implemented, the power unit of (4) is not limited to the reachable type motorcycle, and In other motorcycles, the "motorcycle" mentioned in this manual is a bicycle with a prime mover (electric bicycle) and a reachable motorcycle, more specifically, a vehicle. The body tilts the p. Because of the &, the tricycle, the four-wheeled vehicle (or the vehicle with more wheels) containing the two or more wheels in terms of the number of tires can also be classified into the present invention. The "motorcycle" described in the specification. The invention is not limited to a motorcycle, and can be applied to other vehicles capable of utilizing the present effect, such as a commonly known straddle type vehicle, including a motorcycle. Four-wheeled transport vehicle other than the car (ATV: ATV) And a snowmobile. [Schematic description of the drawings] Fig. 1 is a side view of a DDA motorcycle equipped with a power unit according to an embodiment of the present invention. Fig. 3 is a side view showing the power unit in a state in which the cover has been removed. Fig. 4 is a right side view showing the engine body of the power unit. Fig. 5 is a view A cross-sectional view of a stepless shifting mechanism of the power unit. Fig. 6 is a cross-sectional view showing the starter motor portion of the power unit. Fig. 7 is a view showing one of the power unit primary balancer and oil system Driver 112631.doc
•19- c S 1306927 單元的剖面圖。 圖8是一示出該動力單元之— 【主要元件符號說明】 ~ ° 分的剖面圖。 801 車體框架 810 動力單元 814 主動侧槽輪 815 從動侧槽輪• Sectional view of the 19-c S 1306927 unit. Figure 8 is a cross-sectional view showing the power unit - [main component symbol description] ~ °. 801 body frame 810 power unit 814 active side sheave 815 driven side sheave
816 三角皮帶 817 無段變速機構 818 變速箱 820 引擎本體 821 曲柄轴 822 曲柄轴箱 822m 樞轴（支承部分） 823 氣缸體 Φ 氣缸體之曲柄轴箱側端 835 初級平衡器 848 850 865 866 A， 起動齒輪（起動用主動構件） 起動馬達（起動用電動馬達） ECVT馬逹(驅動用電動馬達) 往復齒輪（主動構件） B，816 V-belt 817 stepless speed change mechanism 818 gearbox 820 engine body 821 crank shaft 822 crank axle box 822m pivot (support part) 823 cylinder block Φ cylinder crankcase side end 835 primary balancer 848 850 865 866 A, Starting gear (active member for starting) Starting motor (electric motor for starting) ECVT stable (electric motor for driving) Reciprocating gear (active member) B,
C 包含一從動側軸線和一主 包含-氣缸車由線且平行於— 包含—曲㈣線且垂直於— 動側輛線的假想平面 曲柄軸線的假想平面 氣缸軸線的假想平面 112631.doc -20. 1306927 E 包含一氣缸體末端且垂直於一氣缸軸線的假想平面 P 曲柄軸線C imaginary plane 112631.doc containing a driven side axis and an imaginary plane cylinder axis of a main containment-cylinder line by line and parallel to the imaginary plane crank axis of the line containing the curve (four) and perpendicular to the line of the moving side - 20. 1306927 E imaginary plane P crank axis containing a cylinder end and perpendicular to a cylinder axis
112631.doc -21 -112631.doc -21 -